912 water tube

[Flyin Farmer]

Can any one tell me what thread tap is used to clean up the threads in the cylinder heads, tubes measure 18 mm however bell metric offers three different pitches coarse, fine and extra fine or if some one has one that you would want to sell that would be great Thanks

[Av8r3400]

Are you talking about the threaded elbows in the heads?

I hope you used heat to remove the elbows to release the thread locker/sealer (Loctite 648) that is used on these. Cleaning the threads with a soft (brass) wire brush is all you need to do to clean the residual thread compound.

[Flyin Farmer]

Thanks for the reply, I did use a brazing torch to release locktite and used a brass brush , still unable to get new tube to start easy.Hense the thread tap.

[kmach]

I have a tap for those . I'll get you it's info